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Growing Degree Day Data for Chatfield at South Platte Reservoir (CHT01)
Station: Chatfield at South Platte Reservoir
Location: 1.2 mi north of Chatfield Res
Lat: 39.57 °N Lon: -105.1 °E Elev: 5414 ft
Irrigation: dry First obs: Dec 4, 2019 14:00
Lat: 39.57 °N Lon: -105.1 °E Elev: 5414 ft
Irrigation: dry First obs: Dec 4, 2019 14:00
| Date | Accum. GDD °F | Daily GDD °F | Historical Avg °F |
|---|---|---|---|
| 04/01/2026 | 3.3 | 3.3 | 6.6 |
| 04/02/2026 | 14.6 | 11.2 | 14.4 |
| 04/03/2026 | 16.5 | 1.9 | 20.3 |
| 04/04/2026 | 23.0 | 6.5 | 29.5 |
| 04/05/2026 | 32.2 | 9.2 | 40.1 |
| 04/06/2026 | 41.8 | 9.6 | 45.7 |
| 04/07/2026 | 53.8 | 12.0 | 53.2 |
| 04/08/2026 | 65.3 | 11.6 | 62.2 |
| 04/09/2026 | 76.3 | 11.0 | 70.1 |
| 04/10/2026 | 82.3 | 6.0 | 78.3 |
| 04/11/2026 | 96.1 | 13.8 | 88.7 |
| 04/12/2026 | 109.1 | 13.0 | 102.1 |
| 04/13/2026 | 120.7 | 11.6 | 114.5 |
| 04/14/2026 | 124.7 | 4.0 | 120.7 |
| 04/15/2026 | 133.6 | 8.9 | 127.6 |
| 04/16/2026 | 147.4 | 13.8 | 136.7 |
| 04/17/2026 | 148.7 | 1.4 | 145.0 |
| 04/18/2026 | 152.7 | 4.0 | 151.3 |
| 04/19/2026 | 164.2 | 11.5 | 161.0 |
| 04/20/2026 | 178.7 | 14.5 | 171.0 |
| 04/21/2026 | 194.4 | 15.7 | 180.5 |
| 04/22/2026 | 211.7 | 17.3 | 191.6 |
| 04/23/2026 | 218.8 | 7.1 | 197.5 |
| 04/24/2026 | 231.2 | 12.4 | 205.5 |
| 04/25/2026 | 233.8 | 2.6 | 213.0 |
| 04/26/2026 | 236.1 | 2.2 | 222.0 |
| 04/27/2026 | 237.1 | 1.1 | 231.6 |
| 04/28/2026 | 240.8 | 3.7 | 238.6 |
| 04/29/2026 | 244.7 | 3.8 | 247.3 |
| 04/30/2026 | 244.7 | 258.9 | |
| 05/01/2026 | 250.8 | 6.1 | 269.5 |
| 05/02/2026 | 262.2 | 11.3 | 277.9 |
| 05/03/2026 | 273.8 | 11.6 | 289.3 |
| 05/04/2026 | 285.3 | 11.5 | 297.7 |
| 05/05/2026 | 285.3 | 307.2 | |
| 05/06/2026 | 285.3 | 316.6 | |
| 05/07/2026 | 294.0 | 8.7 | 326.6 |
| 05/08/2026 | 303.8 | 9.8 | 336.0 |
| 05/09/2026 | 317.2 | 13.3 | 345.8 |
| 05/10/2026 | 327.9 | 10.7 | 354.0 |
| 05/11/2026 | 345.7 | 17.8 | 366.3 |
| 05/12/2026 | 362.1 | 16.4 | 376.9 |
| 05/13/2026 | 380.2 | 18.1 | 390.7 |
| 05/14/2026 | 405.0 | 24.8 | 403.7 |
| 05/15/2026 | 423.1 | 18.1 | 414.6 |
| 05/16/2026 | 436.3 | 13.2 | 426.1 |
| 05/17/2026 | 444.9 | 8.6 | 439.0 |
| 05/18/2026 | 444.9 | 450.4 | |
| 05/19/2026 | 445.9 | 1.0 | 461.1 |
| 05/20/2026 | 448.7 | 2.8 | 472.8 |
| 05/21/2026 | 459.4 | 10.7 | 485.0 |
| 05/22/2026 | 467.3 | 7.9 | 495.4 |
| 05/23/2026 | 480.7 | 13.4 | 508.4 |
| 05/24/2026 | 496.6 | 15.9 | 517.8 |
| 05/25/2026 | 513.7 | 17.1 | 528.8 |
| 05/26/2026 | 530.0 | 16.3 | 541.9 |
| 05/27/2026 | 541.9 | 11.9 | 556.0 |
| 05/28/2026 | 557.7 | 15.8 | 570.5 |
| 05/29/2026 | 577.0 | 19.3 | 585.6 |
| 05/30/2026 | 589.9 | 12.9 | 598.3 |
| 05/31/2026 | 604.7 | 14.8 | 610.3 |
| 06/01/2026 | 620.5 | 15.7 | 624.2 |
| 06/02/2026 | 634.8 | 14.3 | 639.2 |
| 06/03/2026 | 650.0 | 15.2 | 652.3 |
| 06/04/2026 | 668.0 | 18.0 | 668.1 |
| 06/05/2026 | 689.3 | 21.3 | 685.8 |
| 06/06/2026 | 710.2 | 20.8 | 703.2 |
| 06/07/2026 | 735.7 | 25.5 | 722.7 |
| 06/08/2026 | 756.9 | 21.2 | 740.2 |
| 06/09/2026 | 776.1 | 19.2 | 757.5 |
| 06/10/2026 | 796.6 | 20.5 | 776.0 |
| 06/11/2026 | 812.4 | 15.8 | 793.1 |
| 06/12/2026 | 833.7 | 21.3 | 812.1 |
| 06/13/2026 | 850.1 | 16.4 | 830.6 |
| 06/14/2026 | 862.3 | 12.2 | 849.5 |
| 06/15/2026 | 877.9 | 15.6 | 867.9 |
| 06/16/2026 | 896.4 | 18.4 | 887.1 |
| 06/17/2026 | 919.4 | 23.0 | 907.0 |
| 06/18/2026 | 939.7 | 20.3 | 926.0 |
| 06/19/2026 | 960.5 | 20.8 | 945.9 |
| 06/20/2026 | 981.5 | 21.0 | 967.5 |
| 06/21/2026 | 1004.1 | 22.6 | 985.9 |
| 06/22/2026 | 1025.4 | 21.3 | 1005.3 |
| 06/23/2026 | 1045.0 | 19.6 | 1024.7 |
| 06/24/2026 | 1067.5 | 22.4 | 1045.8 |
| 06/25/2026 | 1085.0 | 17.5 | 1064.3 |
| 06/26/2026 | 1107.3 | 22.3 | 1082.9 |
| 06/27/2026 | 1134.7 | 27.4 | 1104.4 |
| 06/28/2026 | 1155.7 | 20.9 | 1124.6 |
| 06/29/2026 | 1176.3 | 20.6 | 1145.4 |
| 06/30/2026 | 1196.0 | 19.7 | 1165.1 |
| 07/01/2026 | 1215.3 | 19.4 | 1184.9 |
| 07/02/2026 | 1239.0 | 23.7 | 1206.3 |
| 07/03/2026 | 1258.6 | 19.5 | 1228.6 |
| 07/04/2026 | 1280.9 | 22.3 | 1250.4 |
| 07/05/2026 | 1302.7 | 21.8 | 1270.2 |
| 07/06/2026 | 1328.4 | 25.7 | 1292.8 |
| 07/07/2026 | 1350.8 | 22.4 | 1314.0 |
| 07/08/2026 | 1374.7 | 23.8 | 1335.6 |
| 07/09/2026 | 1398.4 | 23.8 | 1357.9 |
| 07/10/2026 | 1419.5 | 21.1 | 1380.8 |
| 07/11/2026 | 1442.6 | 23.1 | 1403.0 |
| 07/12/2026 | 1467.3 | 24.8 | 1426.1 |
| 07/13/2026 | 1495.4 | 28.1 | 1450.0 |
| 07/14/2026 | 1521.0 | 25.6 | 1473.0 |
| 07/15/2026 | 1546.0 | 25.0 | 1495.4 |
| 07/16/2026 | 1571.4 | 25.3 | 1518.4 |
| 07/17/2026 | 1597.3 | 25.9 | 1541.6 |
| 07/18/2026 | 1622.6 | 25.3 | 1565.8 |
| 07/19/2026 | 1646.8 | 24.2 | 1590.0 |
| 07/20/2026 | 1673.6 | 26.8 | 1613.1 |
| 07/21/2026 | 1701.8 | 28.2 | 1635.4 |
| 07/22/2026 | 1728.9 | 27.1 | 1658.3 |
| 07/23/2026 | 1753.8 | 24.9 | 1682.2 |
| 07/24/2026 | 1779.2 | 25.4 | 1705.4 |
| 07/25/2026 | 1806.7 | 27.5 | 1729.9 |
| 07/26/2026 | 1834.4 | 27.7 | 1753.9 |
| 07/27/2026 | 1863.1 | 28.7 | 1777.3 |
| 07/28/2026 | 1890.1 | 26.9 | 1800.4 |
| 07/29/2026 | 1917.1 | 27.0 | 1823.7 |
| 07/30/2026 | 1943.5 | 26.4 | 1845.7 |
| 07/31/2026 | 1968.7 | 25.2 | 1868.4 |
| 08/01/2026 | 1991.0 | 22.2 | 1890.3 |
| 08/02/2026 | 2017.4 | 26.5 | 1913.1 |
| 08/03/2026 | 2044.5 | 27.1 | 1936.5 |
| 08/04/2026 | 2060.8 | 16.3 | 1959.8 |
| 08/05/2026 | 2079.7 | 18.9 | 1983.0 |
| 08/06/2026 | 2100.1 | 20.4 | 2004.9 |
| 08/07/2026 | 2120.9 | 20.9 | 2027.5 |
| 08/08/2026 | 2144.5 | 23.5 | 2049.0 |
| 08/09/2026 | 2168.4 | 23.9 | 2069.7 |
| 08/10/2026 | 2194.0 | 25.6 | 2092.1 |
| 08/11/2026 | 2219.1 | 25.2 | 2114.6 |
| 08/12/2026 | 2243.7 | 24.5 | 2137.0 |
| 08/13/2026 | 2265.8 | 22.2 | 2159.5 |
| 08/14/2026 | 2181.7 | ||
| 08/15/2026 | 2203.2 | ||
| 08/16/2026 | 2224.6 | ||
| 08/17/2026 | 2247.0 | ||
| 08/18/2026 | 2270.1 | ||
| 08/19/2026 | 2292.3 | ||
| 08/20/2026 | 2312.9 | ||
| 08/21/2026 | 2336.6 | ||
| 08/22/2026 | 2360.2 | ||
| 08/23/2026 | 2382.9 | ||
| 08/24/2026 | 2404.5 | ||
| 08/25/2026 | 2425.1 | ||
| 08/26/2026 | 2446.0 | ||
| 08/27/2026 | 2467.2 | ||
| 08/28/2026 | 2487.1 | ||
| 08/29/2026 | 2507.0 | ||
| 08/30/2026 | 2527.8 | ||
| 08/31/2026 | 2546.5 | ||
| Date | Accum. GDD °F | Daily GDD °F | Historical Avg °F |